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Finding the Fourth Proportional to 3,993.76, 5,988.66 and 1,396.36

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Solution

The fourth proportional to 3,993.76, 5,988.66 and 1,396.36 is: 2,093.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.76 : 5,988.66 = 1,396.36 : x
  2. Step 2: Convert to fraction form
    3,993.76/5,988.66 = 1,396.36/x
  3. Step 3: Cross multiply
    3,993.76x = 5,988.66 × 1,396.36
  4. Step 4: Simplify right side
    3,993.76x = 8,362,325.28
  5. Step 5: Solve for x
    x = 8,362,325.28/3,993.76
  6. Step 6: Final answer
    x = 2,093.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.